A charging port cover opening and closing device for new energy vehicles

Abstract

The present invention relates to a charging port cover opening and closing device for a new energy vehicle, comprising a charging seat frame and a charging port cover which is arranged at the opening of the charging seat frame and can be swung open and closed, the charging port cover having a rotating side and a swinging side; further comprising a traction component arranged between the rotating side and the corresponding side edge of the opening of the charging seat frame, the traction component comprising a support block and an S-shaped spring bar; a locking component is also arranged between the swinging side and the corresponding side edge of the opening of the charging seat frame, the locking component comprising a lock core fixed to a side edge of the opening of the charging seat frame close to the swinging side, a steering gear arranged on the lock core on a side away from the charging port cover, and a lock tongue arranged on the lock core on a side close to the charging port cover and cooperating with the swinging side edge; the present invention effectively reduces production costs and installation costs; in addition, the present invention has an effective anti-pry function to prevent the charging port from being maliciously damaged, thereby significantly improving the safety protection performance.

Description

Technical Field

[0001] The present application relates to the technical field of automobile charging port covers, and in particular, to a charging port cover opening and closing device for a new energy vehicle. Background Art

[0002] The current new energy vehicles mainly include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc. Pure electric vehicles refer to vehicles that use on-board power as power, use electric motors to drive the wheels, and comply with various requirements of road traffic and safety regulations. When the on-board power supply of a pure electric vehicle is exhausted, it must be charged with the help of a matching charging pile.

[0003] In order to cooperate with the charging of charging piles, pure electric vehicles are equipped with charging ports. The charging ports of pure electric vehicles play a vital role in the charging process of electric vehicles. It is not only the interface for charging electric vehicles, but also has the function of power connection, which is similar to the power plug we use in daily life. In order to effectively protect the charging port when not charging, the charging ports of pure electric vehicles on the market are also equipped with charging port covers that can swing open and close.

[0004] In order to realize the swing opening and closing function of the charging port cover, a hinge needs to be set between the charging port cover and the charging port, and a lock core that can prevent the charging port cover from being accidentally opened is also provided; in order for the hinge of the existing charging port cover to have a self-limiting function when closing and opening, a large number of parts need to be designed and installed, resulting in a more complex hinge structure and cumbersome processing and assembly processes, which in turn leads to higher production and installation costs; in addition, the lock core of the existing charging port cover lacks an anti-pry function, and a vandal can open the charging port cover from the outside by simply using a tool to pry the lock tongue and rotate it, which cannot effectively prevent the charging port from being maliciously damaged, and has weak safety protection performance.

[0005] Therefore, it urgently needs to be resolved. Summary of the invention

[0006] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a charging port cover opening and closing device for new energy vehicles which greatly reduces the number of parts and simplifies the processing and assembly process, thereby effectively reducing the production cost and installation cost, and also has an effective anti-pry function to prevent the charging port from being maliciously damaged, thereby significantly improving the safety protection performance.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a charging port cover opening and closing device for a new energy vehicle, comprising a charging seat frame and a charging port cover arranged at the opening of the charging seat frame and capable of swinging open and close, the charging port cover having a rotating side and a swinging side, characterized in that:

[0008] It also includes a traction assembly arranged between the rotating side and the corresponding side edge of the opening of the charging seat frame, the traction assembly includes a support block and an S-shaped spring bar, the support block is fixed to the side edge of the opening of the charging seat frame close to the rotating side, the support block is formed with two symmetrically arranged extension arms in the direction of the charging port cover, and the S-shaped spring bar is arranged between the two extension arms;

[0009] The ends of the two extension arms and one end of the S-shaped spring bar are rotatably connected to the outer wall of the charging port cover facing the charging seat frame, and the other end of the S-shaped spring bar is rotatably connected to the support block;

[0010] The end of the S-shaped spring bar connected to the charging port cover is closer to the edge of the rotating side than the ends of the two extension arms;

[0011] The S-shaped spring strip is always in a compressed state, the angle a formed by the two ends of the S-shaped spring strip is 100-150 degrees, and the angle a formed by the two ends of the S-shaped spring strip is toward the rotating side.

[0012] Preferably, two ear plates are formed outwardly on the outer wall of one side of the charging port cover facing the charging seat frame and are symmetrically arranged up and down. The angle b between the ear plate and the outer wall of the corresponding side of the charging port cover is 40 to 50 degrees, and one end of the S-shaped spring bar can be rotatably inserted and connected between the two ear plates.

[0013] Preferably, a locking assembly is further provided between the swinging side and the corresponding side edge of the opening of the charging seat frame, and the locking assembly includes a lock core fixed to a side edge of the opening of the charging seat frame close to the swinging side, a servo provided on the side of the lock core away from the charging port cover, and a lock tongue provided on the side of the lock core close to the charging port cover and cooperating with the swinging side edge.

[0014] Preferably, the lock core includes a cylindrical shell, a cover plate detachably fixed at the opening of the cylindrical shell, a transmission column concentrically and rotatably arranged inside the cylindrical shell, and a driving shaft rotatably inserted and connected in the cover plate and concentrically arranged with the transmission column, the outer circumferential surface of the transmission column slidingly fits on the inner circumferential surface of the cylindrical shell, one end of the driving shaft facing the transmission column is rotatably connected to the transmission column, the servo is fixed on the outer wall of the cover plate, and one end of the driving shaft facing away from the transmission column is concentrically fixed to the rotating shaft of the servo.

[0015] Preferably, a passive shaft is formed outwardly from the center of one end of the transmission column facing away from the active shaft, the end of the passive shaft can be rotatably passed through the closed part of the cylindrical shell and arranged toward the swing side edge, and the locking tongue is fixed to the end of the passive shaft.

[0016] Preferably, two symmetrically arranged inclined surfaces are formed on the outer circumferential surface of the transmission column, the adjacent side edges of the two inclined surfaces overlap with each other, the inner angle c formed by the two inclined surfaces is an obtuse angle, and a transition plate is formed on the outer circumferential surface of the driving shaft toward the inner circumferential surface of the cylindrical shell, and two baffles are formed outwardly on the end edges of the transition plate and are respectively located on the outside of the two inclined surfaces.

[0017] Preferably, the lock core also includes two limit columns arranged between the outer circumference of the transmission column and the inner circumference of the cylindrical shell and between the two baffles and respectively slidingly fitted on the two inclined surfaces, and a spring arranged between the two limit columns, the spring is always in a compressed state so that the two limit columns are respectively pressed against the outer walls of the opposite sides of the two baffles, and the two ends of the spring are respectively embedded in the adjacent sides of the two limit columns.

[0018] Preferably, a notch cavity is formed on the edge of the swing side toward the charging seat frame, and a locking groove that cooperates with the end of the lock tongue is formed on the outer wall of the notch cavity at the opening on one side facing the lock tongue.

[0019] Preferably, two buffers are fixed on the outer wall of the charging port cover facing the charging seat frame, which are respectively arranged up and down and close to the swing side edge.

[0020] Preferably, a rotating column located between the ends of two extension arms is formed outwardly on the outer wall of the charging port cover on one side facing the charging seat frame, and a vertical traction shaft is inserted and fixed in the rotating column. The ends of the two extension arms are rotatably connected to the upper and lower ends of the traction shaft respectively, and the two ear plates are both arranged on the outer wall of the rotating column.

[0021] Compared with the prior art, the advantages of the present invention are: the traction assembly of the present invention has a simple structure, and only requires a support block and an S-shaped spring bar to enable the charging port cover to have a self-limiting function when closed and opened, thereby greatly reducing the number of parts and simplifying the processing and assembly process, thereby effectively reducing the production cost and installation cost; in addition, the lock tongue in the locking assembly of the present invention can only be actively rotated from the inside of the car through the lock core, and a vandal cannot pry the lock tongue from the outside to forcibly open the charging port cover, thereby having an effective anti-pry function to prevent the charging port from being maliciously damaged, thereby significantly improving the safety protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other features, advantages and aspects of the embodiments of the present application will become more apparent in conjunction with the accompanying drawings and with reference to the following specific embodiments. Throughout the accompanying drawings, the same or similar figure marks represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0023] Figure 1It is the exploded structural diagram of the right rear side of the present invention.

[0024] Figure 2 It is a right rear structural diagram of the charging port cover and the traction assembly of the present invention.

[0025] Figure 3 It is a right view structural diagram of the charging port cover and the traction assembly of the present invention.

[0026] Figure 4 This is a force analysis diagram of the S-shaped spring strip of the present invention when the charging port cover is closed when viewed from above.

[0027] Figure 5 This is a force analysis diagram of the S-shaped spring strip of the present invention when the charging port cover is opened when viewed from above.

[0028] Figure 6 It is a right rear exploded structural diagram of the lock core of the present invention.

[0029] Figure 7 It is a right front exploded structural diagram of the transmission column, the driving shaft, the limit column and the spring of the present invention.

[0030] Figure 8 It is a front view structural diagram of the notch cavity and the locking groove of the present invention. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided for a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are for exemplary purposes only and are not intended to limit the scope of protection of the present application.

[0032] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown, and the scope of the present application is not limited in this respect.

[0033] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the relevant definitions of other terms will be given in the following description.

[0034] It should be noted that the concepts such as "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0035] It should be noted that the modifications of "one" and "plurality" mentioned in the present application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0036] like Figures 1 to 3 As shown, a charging port cover opening and closing device for a new energy vehicle includes a charging seat frame 1 and a charging port cover 2 which is arranged at the opening of the charging seat frame 1 and can be swung open and closed. The charging port cover 2 has a rotating side 24 and a swinging side 25.

[0037] It also includes a traction assembly 3 disposed between the rotating side 24 and the corresponding side edge of the opening of the charging seat frame 1, the traction assembly 3 includes a support block 32 and an S-shaped spring bar 33, the support block 32 is fixed to the opening of the charging seat frame 1 close to the side edge of the rotating side 24, the support block 32 is formed outwardly toward the direction of the charging port cover 2 with two symmetrically arranged extension arms 321, and the S-shaped spring bar 33 is arranged between the two extension arms 321;

[0038] The ends of the two extension arms 321 and one end of the S-shaped spring bar 33 are rotatably connected to the outer wall of the charging port cover 2 facing the charging seat frame 1, and the other end of the S-shaped spring bar 33 is rotatably connected to the support block 32;

[0039] The end of the S-shaped spring bar 33 connected to the charging port cover 2 is closer to the edge of the rotating side 24 than the ends of the two extension arms 321;

[0040] The S-shaped spring strip 33 is always in a compressed state, and the angle a formed by the two ends of the S-shaped spring strip 33 is 100-150 degrees, and the angle a formed by the two ends of the S-shaped spring strip 33 faces the rotating side 24 .

[0041] Two ear plates 22 symmetrically arranged up and down are formed outwardly on the outer wall of the charging port cover 2 on one side facing the charging seat frame 1, and the angle b between the ear plates 22 and the corresponding side outer wall of the charging port cover 2 is 40 to 50 degrees.

[0042] One end of the S-shaped spring strip 33 is rotatably inserted and connected between the two ear plates 22 .

[0043] The principle of the charging port cover 2 realizing self-limiting with the help of the traction component 3 is as follows:

[0044] The charging seat frame 1 is embedded and installed in the bumper 5. When the charging port cover 2 is in the closed state, the S-shaped spring strip 33 is also in a compressed state. Since the end of the S-shaped spring strip 33 connected to the charging port cover 2 is closer to the rotating side 24 than the ends of the two extension arms 321, the rebound force of the S-shaped spring strip 33 will exert a pressure on the swinging side 25 with the help of the rotating side 24 of the charging port cover 2 to make the swinging side 25 pressed against the charging seat frame 1, thereby enabling the charging port cover 2 to achieve a self-limiting function in the closed state. Figure 4 .

[0045] When the charging port cover 2 needs to be opened, the swing side 25 of the charging port cover 2 is pulled outward, and the rotating side 24 is then rotated toward the charging seat frame 1, and the distance between the rotating side 24 and the charging seat frame 1 is reduced. The two ends of the S-shaped spring bar 33 are compressed and approach each other due to the reduced distance between the rotating side 24 and the charging seat frame 1, thereby temporarily reducing the size of the angle a and increasing the elastic force; since the two ends of the S-shaped spring bar 33 are rotatably connected to the charging port cover 2 and the charging seat frame 1, respectively, the position of the S-shaped spring bar 33 will follow the charging port cover 2 and the charging seat frame 1. The cover 2 changes with the opening of the cover 2; when the rotating side 24 rotates a certain angle, the two ends of the S-shaped spring strip 33 will gradually move away from each other, the angle a will increase, and the rebound force of the S-shaped spring strip 33 will be released; when the rotating side 24 is attached to the two extension arms 321, the rotating side 24 cannot continue to rotate, and the rebound force of the S-shaped spring strip 33 will exert a pressure on the rotating side 24 at this time to make the rotating side 24 always pressed against the two extension arms 321, thereby enabling the charging port cover 2 to realize the self-limiting function in the open state, see Figure 5 .

[0046] like Figures 6 to 8 As shown, a locking assembly 4 is further provided between the swing side 25 and the corresponding side edge of the opening of the charging seat frame 1. The locking assembly 4 includes a lock core 42 fixed to the opening of the charging seat frame 1 close to one side edge of the swing side 25, a servo 41 provided on the lock core 42 away from the charging port cover 2, and a lock tongue 43 provided on the lock core 42 close to the charging port cover 2 and cooperating with the edge of the swing side 25.

[0047] The lock core 42 includes a cylindrical shell 421, a cover plate 422 detachably fixed at the opening of the cylindrical shell 421, a transmission column 423 concentrically and rotatably arranged inside the cylindrical shell 421, and a driving shaft 424 rotatably inserted and connected in the cover plate 422 and concentrically arranged with the transmission column 423. The outer circumference of the transmission column 423 slides on the inner circumference of the cylindrical shell 421, and one end of the driving shaft 424 facing the transmission column 423 is rotatably connected to the transmission column 423. The steering gear 41 is fixed on the outer wall of the cover plate 422, and one end of the driving shaft 424 facing away from the transmission column 423 is concentrically fixed on the rotating shaft of the steering gear 41.

[0048] A passive shaft 4232 is formed outwardly from the center of one end of the transmission column 423 facing away from the active shaft 424. The end of the passive shaft 4232 can be rotatably passed through the closed part of the cylindrical shell 421 and is arranged toward the edge of the swing side 25. The locking tongue 43 is fixed to the end of the passive shaft 4232.

[0049] Two symmetrically arranged inclined surfaces 4231 are formed on the outer circumference of the transmission column 423, and the adjacent side edges of the two inclined surfaces 4231 overlap with each other. The inner angle c formed by the two inclined surfaces 4231 is an obtuse angle. A transition plate 4241 is formed on the outer circumference of the driving shaft 424 facing the inner circumference of the cylindrical shell 421, and two baffles 4242 are formed on the end edges of the transition plate 4241 and are respectively located on the outside of the two inclined surfaces 4231.

[0050] The lock core 42 also includes two limiting columns 425 which are arranged between the outer circumference of the transmission column 423 and the inner circumference of the cylindrical shell 421 and between the two baffles 4242 and slideably fit on the two inclined surfaces 4231 respectively, and a spring 426 arranged between the two limiting columns 425. The spring 426 is always in a compressed state so that the two limiting columns 425 are respectively pressed against the outer walls on the opposite sides of the two baffles 4242, and the two ends of the spring 426 are respectively embedded in the adjacent sides of the two limiting columns 425.

[0051] A notched cavity 23 is formed on the edge of the swing side 25 toward the charging seat frame 1. When the swing side 25 of the charging port cover 2 needs to be pulled outward, just insert your fingers into the notched cavity 23 and pull it outward, which makes it convenient to use; a locking groove 26 that cooperates with the end of the lock tongue 43 is formed on the outer wall of the opening on one side of the notched cavity 23 facing the lock tongue 43.

[0052] Two buffers 6 are fixed on the outer wall of the charging port cover 2 facing the charging seat frame 1 , which are arranged up and down respectively and are close to the edge of the swing side 25 .

[0053] A rotating column 21 located between the ends of two extension arms 321 is formed outwardly on the outer wall of the charging port cover 2 facing the charging seat frame 1. A vertical traction shaft 31 is inserted and fixed in the rotating column 21. The ends of the two extension arms 321 are rotatably connected to the upper and lower ends of the traction shaft 31 respectively, and the two ear plates 22 are both arranged on the outer wall of the rotating column 21.

[0054] A cockpit 101 is formed on an inner wall of the opening of the charging seat frame 1 close to the rotating side 24 , and the support block 32 is fixed in the cockpit 101 .

[0055] A countersunk hole 4251 is respectively formed on the outer walls of the adjacent sides of the two limiting pillars 425 , and two ends of the spring 426 are respectively embedded in the two countersunk holes 4251 .

[0056] The working principle of the locking assembly 4 is as follows:

[0057] The servo 41 is started to make its rotating shaft rotate clockwise, thereby driving the driving shaft 424 and the two baffles 4242 to rotate, and then with the help of the baffle 4242 on the left, a limiting post 425 on the left is pushed to rotate synchronously, thereby with the help of the spring 426, a limiting post 425 on the right is pushed to rotate synchronously, and then with the help of the inclined surface 4231 in contact with the limiting post 425 on the right, the transmission post 423 is driven to rotate synchronously in the cylindrical shell 421; when the outer wall of the limiting post 425 on the right interferes with the inner circumference of the cylindrical shell 421 during rotation, the inner circumference of the cylindrical shell 421 will apply a tangential thrust to the limiting post 425 on the right in the opposite direction of rotation, and this tangential thrust will This will force a limiting post 425 on the right side to approach a limiting post 425 on the left side and briefly leave a baffle 4242 on the same side, while compressing the spring 426 to eliminate the interference between the outer wall of the limiting post 425 on the right side and the inner circumference of the cylindrical shell 421, so that the transmission post 423 can continue to rotate smoothly. When the driving shaft 424 stops rotating, the rebound force of the spring 426 will push the two limiting posts 425 to separate and reset from each other and be symmetrically distributed on the two inclined surfaces 4231, and the limiting post 425 on the right side will contact the baffle 4242 on the same side again; conversely, if the servo 41 is started to rotate its rotating shaft counterclockwise, the transmission post 423 will also rotate synchronously in the same way.

[0058] When the transmission column 423 rotates, the lock tongue 43 is driven to rotate with the help of the driven shaft 4232. When the end of the lock tongue 43 completely leaves the locking groove 26, the swing side 25 of the charging port cover 2 is unlocked and can be opened outward.

[0059] However, if a tool is used to pry the lock tongue 43 clockwise or counterclockwise, the external force on the lock tongue 43 will be transmitted to the transmission column 423 through the passive shaft 4232. However, since the outer walls of the two limit posts 425 are in contact with the inner circumference of the cylindrical shell 421 with the help of the rebound force of the spring 426, the circumferential external force on the transmission column 423 will be converted into two radial external forces by the two inclined surfaces 4231. The two radial external forces are respectively applied to the two limit posts 425. 5 will exert a radial thrust on the inner circumference of the cylindrical shell 421, but the two radial thrusts cannot compress the spring 426, and further cannot push the two limiting pillars 425 to approach each other, so that the outer walls of the two limiting pillars 425 always interfere with the inner circumference of the cylindrical shell 421, so the transmission pillar 423 cannot rotate, which plays an effective anti-prying role, and the greater the force of prying the lock tongue 43, the greater the radial thrust of the two limiting pillars 425, and the tighter the transmission pillar 423 is stuck.

[0060] After charging is completed, the charging port cover 2 is closed first and then the servo 41 is started to rotate its rotation axis clockwise or counterclockwise, thereby driving the end of the locking tongue 43 into the locking groove 26 in the same way, thereby effectively locking the charging port cover 2.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A charging port cover opening and closing device for a new energy vehicle, comprising a charging seat frame and a charging port cover disposed at an opening of the charging seat frame and capable of swinging open and close, wherein the charging port cover has a rotating side and a swinging side, and is characterized in that: It also includes a traction assembly arranged between the rotating side and the corresponding side edge of the opening of the charging seat frame, the traction assembly includes a support block and an S-shaped spring bar, the support block is fixed to the side edge of the opening of the charging seat frame close to the rotating side, the support block is formed with two symmetrically arranged extension arms in the direction of the charging port cover, and the S-shaped spring bar is arranged between the two extension arms; The ends of the two extension arms and one end of the S-shaped spring bar are rotatably connected to the outer wall of the charging port cover facing the charging seat frame, and the other end of the S-shaped spring bar is rotatably connected to the support block; The end of the S-shaped spring bar connected to the charging port cover is closer to the edge of the rotating side than the ends of the two extension arms; The S-shaped spring strip is always in a compressed state, the angle a formed by the two ends of the S-shaped spring strip is 100 to 150 degrees, and the angle a formed by the two ends of the S-shaped spring strip is toward the rotating side; A locking assembly is also provided between the swing side and the corresponding side edge of the opening of the charging seat frame, and the locking assembly includes a lock core fixed to a side edge of the opening of the charging seat frame close to the swing side, a servo motor provided on the lock core away from the charging port cover, and a lock tongue provided on the lock core close to the charging port cover and cooperating with the swing side edge; The lock core comprises a cylindrical shell, a cover plate detachably fixed at the opening of the cylindrical shell, a transmission column concentrically and rotatably arranged inside the cylindrical shell, and a driving shaft rotatably inserted and connected in the cover plate and concentrically arranged with the transmission column, the outer circumference of the transmission column is slidably fitted on the inner circumference of the cylindrical shell, one end of the driving shaft facing the transmission column is rotatably connected to the transmission column, the steering gear is fixed on the outer wall of the cover plate, and one end of the driving shaft facing away from the transmission column is concentrically fixed to the rotating shaft of the steering gear; A passive shaft is formed outwardly from the center of one end of the transmission column facing away from the driving shaft, the end of the passive shaft can rotatably pass through the closed part of the cylindrical shell and is arranged in the direction of the swing side edge, and the locking tongue is fixed to the end of the passive shaft; Two inclined surfaces symmetrically arranged with respect to each other are formed on the outer circumference of the transmission column, the adjacent side edges of the two inclined surfaces overlap each other, and the inner angle c formed by the two inclined surfaces is an obtuse angle. A transition plate is formed on the outer circumference of the driving shaft in the direction toward the inner circumference of the cylindrical shell, and two blocking bars are formed on the end edges of the transition plate and are respectively located outside the two inclined surfaces; The lock core also includes two limit posts arranged between the outer circumference of the transmission column and the inner circumference of the cylindrical shell and between the two baffles and slidingly fitted on the two inclined surfaces respectively, and a spring arranged between the two limit posts, the spring is always in a compressed state so that the two limit posts are respectively pressed against the outer walls on the opposite sides of the two baffles, and the two ends of the spring are respectively embedded in the adjacent sides of the two limit posts.

2. The charging port cover opening and closing device of a new energy vehicle according to claim 1, characterized in that: Two ear plates are formed outwardly on the outer wall of one side of the charging port cover facing the charging seat frame and are symmetrically arranged up and down. The angle b between the ear plate and the outer wall of the corresponding side of the charging port cover is 40 to 50 degrees, and one end of the S-shaped spring bar can be rotatably inserted and connected between the two ear plates.

3. The charging port cover opening and closing device of a new energy vehicle according to claim 1, characterized in that: A notch cavity is formed on the edge of the swing side toward the charging seat frame, and a locking groove that cooperates with the end of the lock tongue is formed on the outer wall of the notch cavity at one side of the opening facing the lock tongue.

4. The charging port cover opening and closing device of a new energy vehicle according to claim 1, characterized in that: Two buffers are fixed on the outer wall of the charging port cover facing the charging seat frame, which are respectively arranged up and down and are close to the swinging side.

5. The charging port cover opening and closing device of a new energy vehicle according to claim 2, characterized in that: A rotating column located between the ends of two extension arms is formed outwardly on the outer wall of the charging port cover facing the charging seat frame, and a vertical traction shaft is inserted and fixed in the rotating column. The ends of the two extension arms are rotatably connected to the upper and lower ends of the traction shaft respectively, and the two ear plates are both arranged on the outer wall of the rotating column.

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